CN107299262B - A kind of 3XXX line aluminium alloy that Si content is high and its manufacturing method - Google Patents

A kind of 3XXX line aluminium alloy that Si content is high and its manufacturing method Download PDF

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CN107299262B
CN107299262B CN201710474175.XA CN201710474175A CN107299262B CN 107299262 B CN107299262 B CN 107299262B CN 201710474175 A CN201710474175 A CN 201710474175A CN 107299262 B CN107299262 B CN 107299262B
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aluminium alloy
manufacturing
line aluminium
rolling
content
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CN107299262A (en
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胡展奎
杜新伟
池国明
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Ruyuan East Sunshine Ai Xijie Fine Foil Co Ltd
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Ruyuan East Sunshine Ai Xijie Fine Foil Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • C22C21/08Alloys based on aluminium with magnesium as the next major constituent with silicon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/40Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/06Making non-ferrous alloys with the use of special agents for refining or deoxidising
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/047Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Continuous Casting (AREA)
  • Metal Rolling (AREA)

Abstract

The invention discloses a kind of 3XXX line aluminium alloys that Si content is high, the aluminium alloy consists of the following compositions by mass percentage: Si:0.62%-0.78%, Fe:0.51%-0.61%, Cu:0.10%-0.16%, Mn:1.07%-1.33%, Mg:1.09%-1.22%, Zn:0.14%-0.20%, Ti:0.03%-0.08%, other single impurity≤0.05%, other impurities add up to≤0.15%, Al surplus.The high 3XXX line aluminium alloy of the Si content (3D04 aluminium alloy) is consistent with 3104 aluminium alloy capabilities of standard, it is able to satisfy the requirement of production pop-top can tank, aluminium alloy window etc., aluminium alloy of the invention can be using the high aluminium alloy scrap of Si content as raw material, instead of the electrolysis aluminium ingot of high-purity, to achieve the purpose that reduce production cost and energy-saving.

Description

A kind of 3XXX line aluminium alloy that Si content is high and its manufacturing method
Technical field
The present invention relates to field of aluminum alloys, and in particular to a kind of 3XXX line aluminium alloy and its manufacturing method.
Background technique
3104 aluminium alloys are the maximum calendering aluminium alloys of single yield in the world, high, good toughness and deep-draw with intensity The advantage that performance waits well is mainly used for making the tank body of pop can.Currently, used in blinds aluminium alloy is frequently with 5052,3104 etc. The aluminium alloy of the trade mark, due in pop can production 3104 aluminum alloy tank body material it is universal, shutter industry also largely uses 3104 Aluminium alloy.International standard provides that the ingredient of 3104 grade aluminium alloys is following (by mass percentage): Si≤0.6%, Fe≤ 0.8%, Cu0.05%-0.25%, Mn 0.8%-1.4%, Mg 0.8%-1.3%, Zn≤0.25%, Ti≤0.1, other lists A impurity≤0.05%, other impurities add up to≤0.15%, Al surplus.
Some researches show that, the ratio of α phase in cast alloy can be increased by increasing Si content, but with the increase of Si content, Solubility of the Mn in Al can reduce, to reduce solid solution strengthening effect, increase the size of the second phase metallic compound, and equal Homogenizing in annealing process is roughened precipitated phase, the final intensity for reducing by 3104 aluminum alloy materials.Therefore in industry actual production, Generally the Si content of 3104 aluminium alloys is controlled in 0.2wt% or so.However, in order to produce lower 3104 aluminium of this Si content Alloy often needs to carry out melting and casting using the electrolysis aluminium ingot of high-purity, therefore will cause the raising of production cost, is unfavorable for whole A aluminium industrial chain it is energy-saving.
Summary of the invention
In view of the above drawbacks of the prior art, the present invention provides a kind of 3XXX line aluminium alloy that Si content is high and its manufacturer Method is produced into instead of the electrolysis aluminium ingot of high-purity to reach reduction using the high aluminium alloy scrap of Si content as raw material Sheet and energy-saving purpose.According to GB T 16474-2011 " deformation aluminium and aluminium alloy trade mark representation method ", by the Si content The trade mark mark of high 3XXX line aluminium alloy is set to " 3D04 ".
The technical solution adopted by the present invention are as follows:
A kind of 3XXX line aluminium alloy that Si content is high, the aluminium alloy consist of the following compositions by mass percentage:
Si:0.62%-0.78%, Fe:0.51%-0.61%, Cu:0.10%-0.16%, Mn:1.07%-1.33%, Mg:1.09%-1.22%, Zn:0.14%-0.20%, Ti:0.03%-0.08%, other single impurity≤0.05%, other Impurity adds up to≤0.15%, Al surplus.
Further, in the aluminium alloy, the mass ratio of Fe and Si are 0.71-0.82.In general, in 3104 aluminium alloys In, stringent, w (Fe)/w (Si) value control of 3104 aluminium alloys of domestic production pop can purposes is required w (Fe)/w (Si) value 2.0 or so, the ratio of wherein α phase just can guarantee, enable aluminum alloy to meet service performance.The present invention improves Si content, by w (Fe)/w (Si) value controls in 1.0 a certain ranges below, can also obtain the aluminium alloy that performance meets requirement.
Preferably, the aluminium alloy consists of the following compositions by mass percentage: Si:0.70%, Fe:0.55%, Cu: 0.11%, Mn:1.25%, Mg:1.09%, Zn:0.17%, Ti:0.05%, other single impurity≤0.05%, other impurities Total≤0.15%, Al surplus.
The present invention also provides the manufacturing methods of the high 3XXX line aluminium alloy of the Si content, successively the following steps are included:
(1) add the raw material into according to the ratio and be molten into molten aluminum in smelting furnace, molten aluminum by refining, slagging-off, stirring, analysis and After adjusting component, enter back into standing furnace stood, refined, degasification and slagging-off;
(2) after fining agent being added in molten aluminum, molten aluminum, which enters, is cast as ingot casting in casting machine;
(3) milling is carried out to the surface of ingot casting, removes the coarse-grain granulosa of ingot casting surface;
(4) homogeneous heat treatment is carried out to the ingot casting after milling, reduces transgranular element segregation, makes solute state more evenly, improved The plasticity of alloy;
It (5) is hot rolling blank by the slab hot-rolling after soaking;
(6) cold rolling is carried out to hot rolling blank;
(7) material after cold rolling carries out intermediate annealing, eliminates material deformation strengthening effect, improves plasticity;
(8) by after intermediate annealing material cold rolling or foil roll for finished product, the specification of finished product can be depending on it produces purposes Sheet material, band, plate etc..
Specifically, in step (4), soaking temperature is 570-600 DEG C, soaking time 10-18h.
Specifically, in step (5), the start rolling temperature of hot rolling is 520-560 DEG C, and finishing temperature is 280-330 DEG C.
Specifically, in step (7), annealing temperature is 330-360 DEG C, soaking time 1-4h.
Specifically, the slab hot-rolling after soaking is rolled to the hot rolling blank of 3.5-4.5mm thickness by step (5).
Specifically, the fining agent being added in step (2) is the common grain refiners, preferably Al- such as aluminium titanium boron, aluminium titanium carbon 5Ti-1B.
Specifically, hot rolling blank cold rolling is rolled to the thickness of 1.6mm by step (6).
Compared with the existing technology, the present invention overcomes Si content and improves to aluminium by adjusting raw material proportioning or production technology Negatively affected caused by the institutional framework and performance of alloy, the 3XXX line aluminium alloy (3D04 aluminium alloy) for keeping the Si content high with 3104 aluminium alloy capabilities of standard are consistent, are able to satisfy the requirement of production pop-top can tank, aluminium alloy window etc..Furthermore Since aluminium alloy si content provided by the invention is high, the high 4XXX line aluminium alloy of Si content, Al-alloy is can be selected in raw material Or other aluminium alloy scraps, the various waste materials in aluminium industry have greatly been digested, the use of the electrolysis aluminium ingot of purity is high is reduced Amount, therefore production cost is not only reduced, the energy-saving of entire industry is further promoted, the promising economic effect of tool is createed Benefit.
In order to better understand and implement, the present invention will be further described in detail below with reference to the embodiments, but this hair Bright embodiment is without being limited thereto.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of 3XXX line aluminium alloy that Si content is high, compositions such as table 1.
The ingredient and content of 1 embodiment of table, 1 aluminium alloy
The manufacturing method of the aluminium alloy successively the following steps are included:
(1) raw material is calculated and be ready to by the proportion of table 1, and raw material is molten into molten aluminum, molten aluminum warp into addition smelting furnace Cross refining, slagging-off, stirring, analysis and adjusting component after, enter back into standing furnace stood, refined, degasification, slagging-off.
(2) after being added fining agent Al-5Ti-1B in molten aluminum, molten aluminum, which enters, is cast as ingot casting in casting machine.
(3) milling is carried out to the surface of ingot casting.
(4) homogeneous heat treatment is carried out to the ingot casting after milling, soaking temperature is 595 DEG C, soaking time 14h.
(5) slab hot-rolling after soaking is rolled to the hot rolling blank of 4.5mm thickness, the start rolling temperature of hot rolling is 540 DEG C, eventually Rolling temperature is 295 DEG C.
(6) hot rolling blank cold rolling is rolled to the thickness of 1.6mm.
(7) material after cold rolling carries out intermediate annealing, and annealing temperature is 340 DEG C, soaking time 2h.
(8) by after intermediate annealing material cold rolling or foil roll for the finished product of 0.146mm thickness.
Embodiment 2
The present embodiment provides a kind of 3XXX line aluminium alloy that Si content is high, compositions such as table 2.
The ingredient and content of 2 embodiment of table, 2 aluminium alloy
The manufacturing method of the aluminium alloy successively the following steps are included:
(1) raw material is calculated and be ready to by the proportion of table 2, is added the raw material into and is molten into molten aluminum in smelting furnace, molten aluminum warp Cross refining, slagging-off, stirring, analysis and adjusting component after, enter back into standing furnace stood, refined, degasification, slagging-off.
(2) after being added fining agent Al-5Ti-1B in molten aluminum, molten aluminum, which enters, is cast as ingot casting in casting machine.
(3) milling is carried out to the surface of ingot casting.
(4) homogeneous heat treatment is carried out to the ingot casting after milling, soaking temperature is 570 DEG C, soaking time 16h.
(5) slab hot-rolling after soaking is rolled to the hot rolling blank of 4.0mm thickness, the start rolling temperature of hot rolling is 550 DEG C, eventually Rolling temperature is 320 DEG C.
(6) hot rolling blank cold rolling is rolled to the thickness of 1.6mm.
(7) material after cold rolling carries out intermediate annealing, and annealing temperature is 350 DEG C, soaking time 3h.
(8) by after intermediate annealing material cold rolling or foil roll for the finished product of 0.146mm thickness.
Embodiment 3
The present embodiment provides a kind of 3XXX line aluminium alloy that Si content is high, compositions such as table 3.
The ingredient and content of 3 embodiment of table, 3 aluminium alloy
The manufacturing method of the aluminium alloy successively the following steps are included:
(1) raw material is calculated and be ready to by the proportion of table 3, is added the raw material into and is molten into molten aluminum in smelting furnace, molten aluminum warp Cross refining, slagging-off, stirring, analysis and adjusting component after, enter back into standing furnace stood, refined, degasification, slagging-off.
(2) after being added fining agent Al-5Ti-1B in molten aluminum, molten aluminum, which enters, is cast as ingot casting in casting machine.
(3) milling is carried out to the surface of ingot casting.
(4) homogeneous heat treatment is carried out to the ingot casting after milling, soaking temperature is 580 DEG C, soaking time 15h.
(5) slab hot-rolling after soaking is rolled to the hot rolling blank of 3.5mm thickness, the start rolling temperature of hot rolling is 540 DEG C, eventually Rolling temperature is 310 DEG C.
(6) hot rolling blank cold rolling is rolled to the thickness of 1.6mm.
(7) material after cold rolling carries out intermediate annealing, and annealing temperature is 360 DEG C, soaking time 3h.
(8) by after intermediate annealing material cold rolling or foil roll for the finished product of 0.146mm thickness.
Comparative example 1
This comparative example provides a kind of 3104 aluminium alloys, and composition meets international standard, specific such as table 4.
The ingredient and content of 4 comparative example of table, 1 aluminium alloy
The manufacturing method of the aluminium alloy successively the following steps are included:
(1) raw material is calculated and be ready to by the proportion of table 4, is added the raw material into and is molten into molten aluminum in smelting furnace, molten aluminum warp Cross refining, slagging-off, stirring, analysis and adjusting component after, enter back into standing furnace stood, refined, degasification, slagging-off.
(2) after being added fining agent Al-5Ti-1B in molten aluminum, molten aluminum, which enters, is cast as ingot casting in casting machine.
(3) milling is carried out to the surface of ingot casting.
(4) homogeneous heat treatment is carried out to the ingot casting after milling, soaking temperature is 605 DEG C, soaking time 12h.
(5) slab hot-rolling after soaking is rolled to the hot rolling blank of 6.5mm thickness, the start rolling temperature of hot rolling is 540 DEG C, eventually Rolling temperature is 290 DEG C.
(6) hot rolling blank cold rolling is rolled to the thickness of 1.6mm.
(7) material after cold rolling carries out intermediate annealing, and annealing temperature is 320 DEG C, soaking time 3h.
(8) by after intermediate annealing material cold rolling or foil roll for the finished product of 0.146mm thickness.
Comparative example 2
This comparative example provides a kind of 3104 aluminium alloys, and composition meets international standard, specific such as table 5.
The ingredient and content of 5 comparative example of table, 2 aluminium alloy
The manufacturing method of the aluminium alloy successively the following steps are included:
(1) raw material is calculated and be ready to by the proportion of table 5, is added the raw material into and is molten into molten aluminum in smelting furnace, molten aluminum warp Cross refining, slagging-off, stirring, analysis and adjusting component after, enter back into standing furnace stood, refined, degasification, slagging-off.
(2) after being added fining agent Al-5Ti-1B in molten aluminum, molten aluminum, which enters, is cast as ingot casting in casting machine.
(3) milling is carried out to the surface of ingot casting.
(4) homogeneous heat treatment is carried out to the ingot casting after milling, soaking temperature is 600 DEG C, soaking time 14h.
(5) slab hot-rolling after soaking is rolled to the hot rolling blank of 4.5mm thickness, the start rolling temperature of hot rolling is 530 DEG C, eventually Rolling temperature is 300 DEG C.
(6) hot rolling blank cold rolling is rolled to the thickness of 1.6mm.
(7) material after cold rolling carries out intermediate annealing, and annealing temperature is 320 DEG C, soaking time 3h.
(8) by after intermediate annealing material cold rolling or foil roll for the finished product of 0.146mm thickness.
The comparison of the waste material use ratio, final finished performance of embodiment and comparative example when founding feeds intake is shown in Table 6:
The comparison of the waste material use ratio, final finished performance of 6 embodiment of table and comparative example
When waste material use ratio in table 6 refers to that founding feeds intake, aluminium waste accounts for the mass percent of raw material total amount.Aluminium Waste material refers in raw material in addition to being electrolysed aluminium ingot, selected 4XXX line aluminium alloy, Al-alloy or other aluminium alloy scraps.
As seen from Table 6, the high 3XXX line aluminium alloy of Si content of the invention (3D04 aluminium alloy) can reach standard The material property of 3104 aluminium alloys, 5052 aluminium alloys, the use that can meet production pop-top can tank, aluminium alloy window etc. are wanted It asks.In addition, the present invention has digested aluminium waste significantly, production cost is reduced, to promote the energy-saving of entire industry, is created Produce the promising economic benefit of tool.
The invention is not limited to above embodiment, if not departing from the present invention to various changes or deformation of the invention Spirit and scope, if these changes and deformation belong within the scope of claim and equivalent technologies of the invention, then this hair It is bright to be also intended to encompass these changes and deformation.

Claims (9)

1. a kind of 3XXX line aluminium alloy that Si content is high, the aluminium alloy consist of the following compositions by mass percentage:
Si:0.62%-0.78%, Fe:0.51%-0.61%, Cu:0.10%-0.16%, Mn:1.07%-1.33%, Mg: 1.09%-1.22%, Zn:0.14%-0.20%, Ti:0.03%-0.08%, other single impurity≤0.05%, other impurities Total≤0.15%, Al surplus;In the aluminium alloy, the mass ratio of Fe and Si are 0.71-0.82.
2. the high 3XXX line aluminium alloy of Si content according to claim 1, it is characterised in that: the aluminium alloy presses quality hundred Ratio is divided to consist of the following compositions: Si:0.70%, Fe:0.55%, Cu:0.11%, Mn:1.25%, Mg:1.09%, Zn: 0.17%, Ti:0.05%, other single impurity≤0.05%, other impurities add up to≤0.15%, Al surplus.
3. the manufacturing method of the high 3XXX line aluminium alloy of the described in any item Si contents of claims 1 or 2 successively includes following step It is rapid:
(1) it adds the raw material into according to the ratio and is molten into molten aluminum in smelting furnace, molten aluminum is by refining, slagging-off, stirring, analysis and adjustment After ingredient, enter back into standing furnace stood, refined, degasification and slagging-off;
(2) after fining agent being added in molten aluminum, molten aluminum, which enters, is cast as ingot casting in casting machine;
(3) milling is carried out to the surface of ingot casting;
(4) homogeneous heat treatment is carried out to the ingot casting after milling;
It (5) is hot rolling blank by the slab hot-rolling after soaking;
(6) cold rolling is carried out to hot rolling blank;
(7) material after cold rolling carries out intermediate annealing;
(8) by after intermediate annealing material cold rolling or foil roll for finished product.
4. the manufacturing method of the high 3XXX line aluminium alloy of Si content according to claim 3, it is characterised in that: step (4) In, soaking temperature is 570-600 DEG C, soaking time 10-18h.
5. the manufacturing method of the high 3XXX line aluminium alloy of Si content according to claim 4, it is characterised in that: step (5) In, the start rolling temperature of hot rolling is 520-560 DEG C, and finishing temperature is 280-330 DEG C.
6. the manufacturing method of the high 3XXX line aluminium alloy of Si content according to claim 5, it is characterised in that: step (7) In, annealing temperature is 330-360 DEG C, soaking time 1-4h.
7. the manufacturing method of the high 3XXX line aluminium alloy of Si content according to claim 6, it is characterised in that: step (5) Slab hot-rolling after soaking is rolled to the hot rolling blank of 3.5-4.5mm thickness.
8. according to the manufacturing method of the high 3XXX line aluminium alloy of the described in any item Si contents of claim 3-7, it is characterised in that: The fining agent being added in step (2) is Al-5Ti-1B.
9. the manufacturing method of the high 3XXX line aluminium alloy of Si content according to claim 3, it is characterised in that: step (6) Hot rolling blank cold rolling is rolled to the thickness of 1.6mm.
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